Reference | Title | Date |
RHP146000 | National Coal Board Inspectorate plans of workings | 1957- |
RHP146000/314 | Plans of workings at Ordnance Survey National Grid Reference NS 26/7229 Maidenbank Colliery, Lightshaw Colliery, Birchlaw, Sunnyside Mine and Viaduct Mine noted on these plans. | [20th century] |